I've been considering the rationale for some of the more oddball "break the mold" characters we've seen in Trek
Case in point: Dr Reyga, a Ferengi scientist (a strange idea if ever there was one)
Sakoma, the Vulcan gunrunner for the Maquis (what's a logical person like this doing helping a band of outlaws?)
Can anyone think of more (or what the motivation for these types of characters is?)